Effects of metal primers on bonding of adhesive resin cement to noble alloys for porcelain fusing

Abstract

This study evaluated the effects of metal primers on the bonding of adhesive resin to four pure metals (Au, Pd, Ag, Cu) and two noble alloys for porcelain fusing (high-gold and high-palladium content alloys). Bonding surface was polished with 600-grit silicon carbide paper and primed with one of the three metal primers (V-Primer, Metaltite, and M.L. Primer). Bonded specimens were fabricated by applying adhesive resin (Super-Bond C&B) on the primed surface. Shear bond strength (SBS) was determined both before and after thermocycling (4-60°C for 2,000 cycles). The highest SBS values to each pure metal after thermocycling were 33.5 MPa for Au by M.L. Primer, 35.0 MPa for Ag by V-Primer, and 34.4 MPa for Cu by Metaltite. SBS to high-gold content alloy after thermocycling was 33.3 MPa by M.L. Primer. None of the primers was effective for pure Pd and high-palladium content alloy after thermocycling.

Bonding and wear characteristics of a tri-n-butylborane initiated adhesive resin filled with pre-polymerized composite particles

“…Among these, acidic monomers are used for bonding tooth structure (1,2), whereas thiol or thione monomers are used for priming noble metal alloys (3)(4)(5). An adhesive resin initiated with tri-n-butylborane (TBB) derivative, in combination with thiol or thione primer, has been used for bonding between tooth structure and noble metal alloy (6,7), between indirect composite material and noble metal alloy (4,(8)(9)(10), and for metal-to-metal bonding (11)(12)(13)(14). In addition, TBB resin has been used in direct restoration (15,16).…”

Design of a new, multi-purpose, light-curing adhesive comprising a silane coupling agent, acidic adhesive monomers and dithiooctanoate monomers for bonding to varied metal and dental ceramic materials

“…It was reported that the highest SBS values achieved for pure Au and high-gold-content alloy were 33.5 MPa and 33.3 MPa with M.L. Primer 27) . Despite the differences in bond testing methodology, Si-AA-SS-2 exhibited comparable bonding ability in this study for Au (30.3 MPa) when pitted against the published bonding data (namely, 33.5 MPa 27) and 25.2 MPa 7) ).…”

A study of self-adhesive resin cements for bonding to silver-palladium-copper-gold alloy — Effect of including primer components in cement base

“…Therefore, the availability of sulfur-containing monomers such as VBATDT and MTU-6 (6-methacryloyloxyhexyl-2thiouracil-5-carboxylate) that promote adhesion to precious alloys [35][36][37][38] could have improved the bond strength and bonding durability of cements.…”